橄榄海蛇是一个危险的毒蛇从澳大利亚北部的珊瑚礁蛇。 It has a sturdy body and is purplish brown above with paler brown on underside.它有一个坚固的身体,是紫褐色与淡棕色的底部。?Usually has some creamy white scales scattered over body.橄榄海蛇通常有一些全身乳白散鳞。 The tail is vertically compressed and mostly creamy white with a brown ridge down the back.尾部垂直压缩,